suggestions for shells

I have a new mossberg 935 on order and it should be here in a couple of days, so with a little more than a month to go to shoot waterfowl, I am looking for some suggestions on shells to buy. I had my daughter pick me up some estate 3 1/2's at sportsmans warehouse in 2's and 4's, but they are only 1 3/8 oz loads. These were the only 3 1/2's that they had left on the shelf! I am planning on using 3" for the majority of shots with some 3 1/2's for geese or maybe try some of these fast shooting lighter 3 1/2 loads. I am new to this steel stuff, because I quit hunting waterfowl 20 years ago and am just getting started again. Give me some suggestions.

My wife and I were shooting ducks out near Riverton, WY about 2 weeks ago and we were smashing ducks with 3" #3 Blackcloud. I was using my SBE and she was shooting her new Beretta AL391. The Blackcloud didn't pattern very well with factory chokes but patterned great with the Blackcloud chokes. We had the mid-range chokes and were shooting ducks on a river over decoys. I folded a fat drake mallard at 47 yards and saw that he was hit with only one pellet square in the breast. He is in the freezer destined to hang from the ceiling as if he is gonna land on your head, with the others. Only one pellet hit him because of my lead distance, not the cloke or load. If you are looking at an affordable alternative to Hevi Shot, check out Blackcloud.

"Be polite, be professional, but have a plan to kill everyone you meet."
"I come in peace. I didn't bring artillery. But I'm pleading with you, tears in my eyes: If you f*ck with me, I'll kill you all." MarineGeneral Mattis
Custom built 7mm SAUM

Well, I got to visit the cabella's store in Billings MT yesterday as well as several other sporting goods stores and stocked up on several different brands of steel shot. Now I just need for the gun to show up, maybe Monday and then I can go pattern it. I did find some good deals on some close out 3 inch remington nitro steel in 1's for 10.50 a box.